Explain why an energy pyramid in any ecosystem typically is limited to four or five levels only.

What is organism complexity?

Hydrothermal vents pump super heated salt water into the ocean that is filled with various minerals. Because of this, there is absolutely no life surrounding this oceanic feature. True Or False

A planned procedure to test a hypothesis is called bias true or false

What can be learned from ultrasound, amniocentesis, and chorionic villi sampling? What risks are involved in each procedure

Unlike photosynthesis, cellular respiration

What is the role of cellular reproduction in maintaining genetic continuity

What is the trait that distinguishes primates, rodents / rabbits, crocodiles, and dinosaurs / birds from amphibians and earlier lineages?

John, a 19 year old boy, wanted to figure out why he wasn't sleeping well at night. He normally and heads to bed by 11 pm and wakes up about 6 am.

What is the base-pairing rule for DNA?

What kind of bond forms between oxygen and hydrogen in a single water molecule? A. Ionic B. Metallic C. Polar covalent D. Hydrogen